2013 850xp fan wont turn on

I haven’t ridden my 850xp in a while and when i went to ride it yesterday the fan wouldnt kick on and it would start to overheat. It was at the dealership where they installed a new battery. I have 4 positive connections on my battery and 2 negatives which sounds odd to me but apparently it could be normal. Can anyone confirm this? The reason i ask is because one of the wires has red tape on it but for some reason i think its a ground. Also what are the first things i should look for. I can spin the fan freely. It doesn’t move super easy but it moves. Is there a fuse for it or relay that should be checked? Thanks guys!